Water-purifier for loco motive-boilers



UNITED STATES.

PATENT OFFICE.

JOSHUA B. BARNES, OF SPRINGFIELD, ILLINOIS.

WATER-PURIFIER FOR LOCOM'OTIVE-BOILERS.

SPECIFILCATION forming part of Letters Patent No. 436,094, dated September 9, 1890.

Application filed June 16 1890- Serial No. 355,664. (No model.)

To all whom it may concern:

Be it known that I, JOSHUA B. BARNES, of Springfield, in the county of Sangamon and State of Illinois, have invented a new and ImprovedWater-PurifierforLocomotive-Boilers; and I do hereby declare that the following is a full and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

My invention relates toan improvement in water-purifiers for locomotive-boilers.

My object is to provide means for rapidly precipitating the impurities contained in the water to the bottom of the narrow space between the fire-box and the outer shell of the boiler, or that part of the boiler commonly termed the leg, and to prevent said impurities from becoming indurated, so as to form that incrustation so detrimental to economical steaming, and the removal of which, when formed in contracted parts of the boiler, it is almost impossible to effect; and also to provide improved means for blowing out by the water, under steam-pressure, such sedimentary matter as may accumulate in the form of mud in the bottom of the leg of the boiler, and thus avoid the usual necessity for frequently washing out when the boiler is empty.

With these objects in view my device consists, essentially, of a perforated plate, in combination with an outlet-valve, both located in the leg of the boiler, as fullydescribed in the following specification, and illustrated in the accompanying drawings, in which Figure 1 is a plan View of the lower part of the leg of alocomotive-boiler, taken in the line y y, Fig. 2, and shown as provided with my device. Fig. 2 is a side view of the same, showing a portion of the outer shell removed.

Referring to the drawings, A represents the lower portion of the fire-box; B, the outer shell of the boiler; O, a part of the mudvalve D D, stay-bolts; F, a perforated plate supported horizontally upon the lower row of stay-bolts, and g g are hand-holes closed by screw-plugs, as shown in both figures.

By reference to Fig. 1 it will be seen that the perforated plate F fills the space between the fire-box and the outer shell of the boiler and rests upon the lower row of staybolts; that the hand-holes g are located immediately above the perforated plate, and

the mud-valve sufficiently far below the plate to drain the bottom of the water-space between the fire-box and the outer shell of the boiler, and is preferably located at the back of the fire-box.

The operation of my device in its primary function is to keep the water that is beneath the perforated plate in such commotion and rapid circulation as to assist the precipitation of such impurities as the water may be charged with, and also prevent such matter, when deposited upon the bottom of the water-space, from hardening into scale. This I accomplish by the perforations in the plate F, which have the effect of forming currents and counter-currents as the water in contact with the more intensely-heated parts of the fire-box flows away, to be replaced by that in contact with less intensely heated parts. 'The perforated plate also affords valuable aid when blowing off by the mud-valve. The water, being under heavy steam-pressure, is driven with great force downward through the perforations against the bottom of the remote from the mud-valves, thus re-enforcing the outflowing current where it has the most sedimentary matter to drive before it.

Such sedimentary matter as may accumulate on the top side of the perforated plate may be readily removed from time to time by opening the hand-hole 9, through which a hand-scraper or other suitable tool may be employed.

l-Iaving fully described my invention, what I claim as new, and desire to secure by Let ters Patent, is

In a locomotive-boiler, the combination, with the leg thereof, of a perforated plate F, hand-holes g, and outlet or mud valve 0, all of said parts constructed and located with reference to each other, substantially in the manner and for the purpose herein set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 28th dayof April, 1890.

- JOSHUA B. BARNES. Witnesses:

S. W. J EFFEBY, A. B. MARS. 

